Retrieving-trolley.



C. E. LANG. RETRIBVING TROLLEY. APPLICATION FILED JUNE 20, 1910. 1 ,1 02,673. `Pat-.emma July 7, 1914. y 4SHBBTS-BHBBT l.

f? 54 5 jwen Wese; M5255 ma@ X/Q y 7 C. E. LANG. RETRIEVING TROLLEY.

APPLICATION FILED JUNE 20, 1910. 1,102,678. Patented July 7, 1914.

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. C. BLANG. RETRIEVING TROLLEY.

APPLIUATION FILED JUNE 2o, 1910. 1,102,673. Patented July 7, 1914.

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C.V E. LANG. RETRIEVING TROLLEY. APPLIOATION I'ILED'JUNEZO, 1910*.

1,102,673. Patented July 7,1914. 4 SHEETS-*SHEET 4.

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UNTTED sTATEs PATENT onnrcn.

CHARLES E. LANG, OF LOS ANGELES, CALIFORNIA, ASSIGNOR TO WASSON ENGINEER? ING & SUPPLY C0., OF PETALUMA, CALIFORNIA, A COIEtPOILllTIGN' OF CALIFORNIA.

RETRIEVING-TR-OLLEY.

Specification. of Letters Patent.

' Patented July 7, 1914.

Application filed .Tune 20, 1910. Serial No. 567,990.

To all whom t may concern.'

Be it known that I, CHARLES EUGENE LANG, a citizen of the United States, residing at Los Angeles, in the county of Los retrieving trolley described in my applica-` tion, Serial No. 439,87 8, filed June 22, 1908, for United States lpatent on retrleving trolley.

The object of this ,invention is to simplify the co-nstruction and improve the operation of the said retrieving trolley, and` to make the automatic retraction of the trolley wheel from the wire and also the resetting action more positivek and direct. This invention. differs specifically from that disclosed in said previous application in the construction and arrangement of the means to change the ulcrum of the trolley springs.

The accompanying drawings illustrate the invention.

Figure 1 is a broken side elevation on a reduced scale of a trolley embodying this invention mounted for operation on a trolley car, a fragment of which is shown. .The trolley is shown in normal running position with the trolley wheel against the trolley wire. Fig. 2 is a broken fragmental plan of the invention on an enlarged scale showing the trolley base turned as though the longitudinal axis of the car extended diagonally across the sheet, the trolley foot being swung relative to the base, into the farthest lateral position which is possible for it to reach after the trolley wheel has escaped from the wire. The large arrow indicates the direction in which the car is supposed to be moving and is at the supposed axis of the car. Fig. 3 is a vertical longitudinal mid-section on 'line @n3-m5, Figs. 2, 9, 10 and 11. Parts are shown in the escaped position in solid lines and in the running position in dotted lines. Fig. 4 is a .reduced detached fragmental sectional elevation of the trolley foot, with one of the standardsand the fulcrum pin supporting link and roller in place and in the position shown in Fig. 3. Fig. 5is an elevation on said line @e5-ar, showing in dotted lines a position to which the trolley pole may have been thrown by the trolley springs when the trolley wheel escapedA from the wire, andshowing in solid lines a position down to which the trolley pole, fulcrumed on the tripping ulcrum lever, has been suddenly kicked or thrown by the action of the trolley springs. Fig. G is adetail analogous to Fig. 4 showing the tripping and fulcrum lever in the position shown in Fig. 5, with the lower end of the trolley pole in solid and dotted lines corresponding vrespectively to the solid and dotted positions thereofin Fig. 5. Fig. 7 (Sheet 8) is a view analogous to Figs. 3 and 5 showing the same parts in resting or unlatched position to which they have arrived from the position of Fig. 5. Fig. 8 is a detail analogous to, and on the same scale as Figs. 4 and 6 showing the fulcrum link, the heel, the locking bolt and the latch in the position shown in Fig. 7. Fig. 9 is a fragmental plan on the scale of Figs. 4 and 6, of one-half` of the trolley-foot with parts in the latched or operative position corresponding to that shown in dotted lines in Figs. 3 and 4 and in solid lines in Fig. 14. Fig. 10, (Sheet 4) is a plan on a 'scale somewhat larger than Fig. 9 of the trolley foot and somel of the parts carried thereby; some of the parts being broken and others being sectioned on line w1", Fig. 14, (Sheet 3) to show f tion of Fig. 7 to the latched position of Figs.

13 and 14. Fig. 13 is a reduced 'ragmental detail showing the parts in the latched position to which they are tending in Fig. 12. Fig. 14, (Sheet) is a sectional elevation on said line @a3-m5, showing the position of the partsas the trolley pole, under restraint of the trolley rope, not shown in this view, is

allowed to rise slowly toward the trolley wire. Fig. 15 is a reduced detailof some of the parts in the position shown in Fig. 14. The car 1, insulating trolley foundation -2 thereon, trolley pole 3, trolley wheel 4, and

trolley wire 5 are of the usual construction. The annular cast metal trolley7 base 6 is provided with bolt holes 7 to receive bolts 8 by which it is fastened to the trolley ioundation 2, and is also -provided with a notch 9 and a race-way groove into which said notch vheel pin 24.

opens. The trolley oot-10A is anti-frictionrespectively.

-The trolley foot is provided with a notch 9 corresponding to the notch 9 and said4 .notches open vrespectively into the .annular vgrooves 12, 13, so that when the trolley foot is brought int-o position in the trolley base.. 4with the annular grooves `12, 13, registering; `With eac-h other, and the notches 9, 9 also registering with eachother, the .anti-friction l balls 11 maybe inserted into the'race-WayI formed by grooves 12, 13, and will then 4supl 'port the `trolley yfoot in the trolley ibase. The i notchesv 9 and 9L are arranged in such lpositions that when the trolley is in .operation` said notches arenot liable to register. 1n practice the race-Way Will be appropriately filled With the balls, rooni being left vin the race-Waytoalloiv plenty of play7 and a ,suticient number of balls being supp-lied to in- .sure a satisfactory distribution of the balls around the race-Way. The kballssubs'tantially correspond in 'diameter with the race- Way so that there ,Will be a true anti-friction support against all strain in every direction Without liability of rattling. 1

Two standards 14, 14" project upwardly. i. from 'the trolley-'toot 10.at the sides thereof, Aand each is provided -With .tiveholes,15, 16,;

ley-means of the ulcrum pin, the rollers, Alin'ksfha'nger pins and standards upon the trolley "fo-ot, .and is capable of moving forward and back axially, .and up and dow-n in fulcrum vpin 29, being restrained Jfrom too 'great forwardvand upward movement by the links 21, '22 and 23. l

- The trolley spring, which, with ,said former application, is composed oftwo helieals 34, 34 on opposite sidesot the trolley pole, is .fastened .by hook bolts 35 and nuts 36 to the trolfley po-le arm 87 that projects upwardand forward 'from the trolley shank. Said helicals Aare engaged at their lower ends with 4hooks 38, SScarried bypins 39, 39 mounted Vin `the .holes 17 in the standard, there being a hook and a pin therefor upon each standard. v

both above the .level of the fulcrum pin 29; .the heel ypin 24 and ,the stay pinl; and the 'torce of the trolley spring is eifective through the ,gui-danceof .the links, yto move'the trolley ,pole forwardly :endwise toward the fron-t of fthe standards, and the ulcrum pin 29 is restrained from .too .great forward movement rby the'links 21,22 and heel link23. j p The tripping and fulcrum lever is pivoted .on a pin 41 that is supported in the .holes'18 of. the standards 14,14, Which holes 17, 18 and 19, inWhi'ch are .fixed pins 24, 30,

39 (39) 41 and 31 respectively. The shank 120k ofthe trolley pole 3 :is carried between the standards'v 14, 14 by .means .of tulcrum pin' supporting llinks 21, 21, fulcrumstay link22, ulcrum heel link 23 and ulcrum The vfulcruinheel link `23 is bturcated and "is pivotally mounted by means oi the fulcriun heel pin 24 Which :is sup-ported in the holes 15 loit' the standards 4and isfprovided with a roller 25 to contact a vheel y26 on the shank 20 when :the trolley pole is' at'rest as in Fig. 7 or is vbeing moved vdown to resetting or latching position as lin Figs. 12 and 18. The fulcrum-pin supportinglinks21, 21` are provided With'longfilink 23. The fulcrumpin 29 practically its froin'sideto side of the slot 32 and extends through the slots 32, 33; there. being anti- Vriction rollers 29 on, said pin ..29V to roll in and .practically iit the slot 33.

It is thussseen that, normally, the `lower en d'of the trolley poleis shiftably fulcrumed are located `in iront of `and above the level of .the fulcrum pin '29.

e vThe shank 2O gis I,providr-ad Witha .smooth .face `42 With which the rounded rearward end 43 of the lever 40 contacts,- said face 42 and rounded rearward end43 lbeingrin slidable relation :to eachother .so that When the trolley pole moves forward, the lever may in :some periodsbeoperated thereby on ypivot 41 and at. other periods When Ithe .lever is held stationary,the trolley Apolemay be fulcrume'd upon said .end V43 of .thelever 40, said' end thus forming the .secondarylor tripping '.tulCrum. f "The heel link is provided with fa .tip 44 which isrounded at the `front and angular at ,the back'and is adapted to :contactwvith the rear vfree .ti-p45 of/the latch 46, said latch tip beingrxrounded at Ythe back Aand .notched to engage the angular `portion. lof the tip 440i' the heel link. VSaid latch 46 is lpivoted'loy a pivot 47 to a hanger '48 that extends :down from the front rof the trolley foot 10;l and said latch is normally hel-d resilientlyin flatching' position by the coiled s pring49, the lower tend yof `which iscaught on v:the hook VA ofthelatc-h and the upper end on the ,hook 51 .of the tripping fulcrum lever 40. Said `Vlever 40 projects forward from vits pivot 41 and is pivoted by a pivot 52 toa piston'rod link y53 that is pivoztedby is similar to the piston rod shown in m previous application and is Lprov-ided at its limited paths on the irst, or normal shiftingy The hanger :pins-30 and `hook pins 39 are lower end with a reduced portion forming a stud 56 on which ,is secured a recessed and perforated valved piston head 57 having a valve 58. Said piston head is fixed o-n the piston rod by means of a sleeve-like nut 59,

pressed against the head of the bolt 59.v

When the valve 58 is thus depressed it leaves an open way through the perforations 63 o-f the piston head. Said piston head is mounted in a vertical cylinder 64, the upper end of which is closed by a. gland 65 that is provided with a vent pipe 66 having perforations 67 beneath its cap G8 and extending up above the top of the gland so that the cylinder 64 may be filled through the pipe 65, with a suitable liquid as oil when the cap 68 is removed, rlhe interior of the cylinder is open above the piston tol external air pressure at all times so that when the valve 58 is open the liquid will flow by gravity to the bo-ttom of the cylinder.

The cylinder 64: has a flexible bottomk formed by a diaphragm 69 reinforced by central plates 70 and 71, and the gland or upper cylinder head G5 is held in place vby bolts 72 passing through the gland 65 and screwed into the cylinder and said cylinder is fastened to the trolley foot 10 by bolts 73 passing through lugs 74 and through the diaphragm and screwed into the trolley foot, thus to clamp the cylinder, the diaphragm and the trolley foot all tightly together so as to hold the liquid body 75 against the downward pressure of the piston head when such head is acted upon by the piston rod and this occurs whenever the rear end of the lever 4:0 is acted against by the trolley pole shank 20.

The lower reinforcing plate or head 7l under the diaphragm is provided with a stem 7 6 that moves in a vertical guide 77 formed on the trolley foot 10, and engages a boss 78 on the top of the latch 4G near the pivot i17 of saidlatch, so that when the piston is suddenly forced down the piston head 57 will overtake the valve 58 which is caught by the liquid body 75 and will close the passage way 63 thus making the piston head practically solid so that upon its further descent it will force the liquid body 75 downward todrive down the diaphragm and consequently the head 71 and its stem 7 6 to force the latch down to release the tip le of the heel, as shown in Fig. 3, so that said tip may swing backward from the latched position shown in Fig. 14 to the positions shown in F and 7, where the diaphragm, liquid and piston form a block for the lever. The trolley pole is provided with the usual trolley rope 79 by which it may be drawn down in the usual manner to allow the parts to become latched as shown in Figs. 13 and 14.

A. locking bolt 80 is pivoted by a pivot 81 to the lower end of the heel link 23, and the trolley base is provided with a number of reversely arranged ratchet teeth 82 and 83 having sloping outer faces 84 and straight inner faces 85; said ratchet teeth being arranged in pairs at front and back of said trolley base and spaced apart from each other sul'liciently to allow a limited move* ment of the trolley foot when the locking bolt 80 is extended between the straight faces 85 as shown in Fig. 5. Said locking bolt is upwardly curved at its tip and is adapted to pass freely over the sloping outer faces of teeth 82 and 83 to enter between the teeth of either pair at front or back but cannot return over the straight inner faces of the teeth so that if the locking bolt is extended when the trolley pole is swung into position at rightangles to the car, the trolley pole may be swung around into line with the axis of the car either at front or back and when thus swung will be locked against further lateral movement beyond the certain limit determined by the space between the straight faces of the teeth. Bolt guides 86 extend up from the trolley foot 10, one on each side of said bolt 80 and provide against wrenching of the pivot 81 when the bolt 80 is extended as shown in Fig. 5. A set screw 87 holds the lower end of the trolley pole i in the socket of the shank.

In installing the trolley, the dash pot chamber or cylinder 64 is supplied with oil when the trolley pole is raised to its high est position; the piston rod at that time being mostdeeply inserted into the chamber, so that a surplus of oil cannot be put into the chamber, otherwise the chamber might be filled too full. so that when the trolley pole were to swing up oil would be squirted out of the vent tube. l

In practical operation when the trolley pole is latched as shown in Figs. lll and 15, and is restrained by the trolley rope or by the trolley wire so that its up and down movement will be comparatively slow, such as may occur in easing the trolley wheel to the wire or in running along' and responding to the undulations of the wire, the valve 58 will be held down by the spring G2 so that the liquid in the cylinder may freely pass through the by-pass formed by the perforations in the piston head; but in case of sudden upward movement of the trolley pole, such as occurs when the trolley wheel leaves the wire, the trolley springs force the trolley shank against the rounded back end. 43 of the lever 40, and said lever responding to the thrust, suddenly forces down the head a short distance, thus closing the valve 58 and forcing down the liquidbody, and operating the latch 46, thereby'releasing the heel linkas shown in Fig. 3. `During this sud-4 den upward and forward movement cf the trolley pole the tendency ofthe ltrolley springs is toy forcethe trolley pole forwardly endwise as Vwell as up and consequently as 't its rear end 43 and since said end 43 contacts with the shank behind the hangerpin 30, the

i vtrolley pole can only move forwardfat its -lower end by moving downward at its rear v end and consequently the force of the springs 34 coming through the face 42 of the shank on the fulcrum 43 causesthe upper end of thev trolley pole to be suddenly jerked vor kicked down into the position shown in solid i Thence the trolley pole'l swings down until its heel 26 rests on the ln the meantime the vful` pin 29 rises inthe slots 27 and 33' while lth-e supporting links 21 swing rforward lines in Fig. `5.

heel rollerv 25.

crum

until said pin is stopped as shown in Fig.

7, the leverage of the springs 34 vto lift the l pole being now insufliclent to swing the pole L into running position.

force the fulcrum pin 29` backward, (see Figs. 7 and l2) thereby increasing the tenlsion of the springs 34, 34. During this operation the tripping lever-40, released from upward pressure of thetrolley pole, will op- ,crate under tension `of the spring49 to liftthe valved pist-on head 57, thusrelieving the stem v76, from its latch operating pressure and theheel link 23 will swing on the heel pin 24 until its tip 44 comes in front of the hook of the latch 4G whereupon the latch rises under the' `force of the spring v49 thus latching the tip 44. The tension of the trolley springs 34, 34 is now sufcient to raise the trolley pole as the same 'is eased up for that purpose from` the position shown in Fig. 14, to the position shown in Fig. 1.

'l claim l. The combination witha pivotedtrolley pole, of a spring -touphold the trolley pole,

a normal fulcrumfor the trolley .pole1 Said fulcrum being shiftable to increase the tension of the spring on the trolley pole, a latch to hold saidv fulcrum in the position of inf creased tension, a fulcrum lever contacting with the trolley pole, rearward from the normal lfulcrum of the trolley pole, andineans perative torelease the latch upon relatively slow movement ofthe lever.

l2. The combination with a trolley pole, of a lfulcrurn in-one .end lof the trolley pole, linksshi-ftably supporting and limiting the forward and` upwardmovement of the fulcrum pin, springs` to-tmoveV the trolleyvpole forwardly vendwise and upward, meansv to hold said links against the force of the spring, a' lever 'contacting with and forming a secondary vfulcrum for the trolley pole, l

and vmeans loperatable vby sudden upward movement of the lever to release said link holding means, said/operatable means being inoperative to release the link holding means upon relatively slow movement ofthe lever.

3.y `The combination-with a support, of `a pin,a link pivoted on the pin and 'provided below the pin with a'tipand above the pin `with a vertical` slot, a stay link pivoted to the support and extending aslant therefrom to a point above said pin and'thereprovided with a slot registering with the` slot Lin the ,firsty named: link, a `supporting link pivoted to the support Aand extending downward fromitspivo-t and lprovided with ka slot registering with the slots of the aforesaidlinks, a fulcrum pin extending throughthe slots, a trolley pole fulcrumed on the fulcrum pin,

. a spring pivoted to the support, the pivot To yreplace the trolley wheelon the wire the operator'may now, by the meansof the i l trolley rope 79 kpull the pole ndown from the resting position shown in Fig. 7, whereupon 5 theheel 26 fulcruming on the roller 25 will :thereof lying in a. horizontal pla-ne that extends between' the horizontal planes ofthe fulcrum pin and the pivot of the supporting link, said spring beingconnect-ed tothe trolpole is down, thus to reduce the leverage between the spring and vthe trolley pole when the trolley pole is-down and to increase such leverage. when the trolley pole is up.

V4. The combination with atrolley base, `of a trolley pole, a pin supporting the trolley pole, a pivoted link lto support" the pin, means to move .the trolley pole upward and forward, a latch to catch the pivoted link, a lever in slidable engagement with the pole and adaptedto be operated thereby as the pole rises, a spring between the lever and the latch to hold the latch in catching position and the lever andv pole in engaging position,

mechanism between the lever and the latch Y ,thetrolley pole intermediate its ends, said means being only operatable by sudden upward movement of the trolley pole to put the primary fulcrum out of commission and the secondary fulorum into commission.

6. The combination with a trolley pole, of a shiftable primary fulcrum normally in commission to fulcrum the trolley pole at one end, a spring connected at one end to the trolley pole, means to hold the other end of the spring, means to hold the primary fulcrum against Shifting, and means including a normally inactive secondary ulorum to fulorum the trolley pole intermediate its ends, said means being only operatable by sudden upward movement of the trolley pole 10 CHARLES E. LANG.

In presence of JAMES R. ToWNsE-ND, L. BELLE RICE.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents.

Washington, D. C. 

